I'll answer on Mark's behalf because I think he will be offline for a few days.

There are no specifics, rules or restrictions aside from what's mentioned above, although the number of flies we're supposed to submit may change since the number of participants has changed. Mark should return in time to make that call.

Sometimes the participants are asked to identify which patterns they intend to submit so that we don't end up with multiple batches of the same pattern, but there has been no such request so far.